About us

About Grunn

Grunn is a Brazilian technology company founded in January 2026. We build AI products for research with users and employees: our platform conducts in-depth qualitative voice interviews at scale — over 3,000 interviews run as of July 2026, with a 90%+ approval rating from respondents.

Why we exist

Traditional research forces a choice: forms reach many people but stay shallow; interviews go deep but reach few and cost weeks of scheduling. We built Grunn to remove that trade-off — scale and depth at the same time.

Our mission is to make conversations with customers and employees accessible and scalable, regardless of company size.

Who's behind Grunn

Sergio PenaCEO

Product

Built and scaled AI products with millions of reais in ROI at 2 Brazilian unicorns

Fernando Freitas

Research

PhD in Anthropology (UFRJ) and UX Research specialist. A reference in research at a Brazilian unicorn

Bruno Ivamoto

Engineering

Key player on the elite team that rebuilt a Brazilian unicorn's banking app in just 3 months

How we work

Auditable evidence

Every conclusion comes with the verbatim and the source audio. Real, citable, verifiable data — never synthetic answers.

Methodology with scientific validity

Scripts and analyses follow quality rubrics defined by career researchers — not generic prompts.

LGPD from day one

Consent on entry, recording opt-in, data hosted in Brazil (Azure) and models that never train on customer data.

Programs and partnerships

Grunn was approved in the selection processes of global and Brazilian startup support and acceleration programs — Microsoft for Startups, Google for Startups, ElevenLabs Grants, Plug and Play's acceleration batch and the Founders Club Growth Challenge. Backing from organizations of this reputation attests to the company's seriousness and potential, and to the confidence in what we are building and in the people building it. Beyond the recognition, the programs give us priority support, access to specialists and to their partner networks.

Microsoft for Startups

A program exclusive to startups that have already raised from funds — Grunn was approved as an exception, for the company's high potential.

Google for Startups

Grunn was selected for Google's startup support program, with access to specialists, infrastructure credits and the global partner network.

ElevenLabs Grants

Grunn is part of ElevenLabs' grants program for startups building with voice AI, with early access to the technology and direct support from the team.

Plug and Play — Acceleration

Grunn was one of 6 startups selected for Plug and Play's 2026 acceleration batch in São Paulo — the Silicon Valley global innovation platform picks a handful of startups per cohort for three intensive months of mentorship, corporate introductions and investment opportunities.

Founders Club Growth Challenge

Grunn was selected for the Founders Club Growth Challenge, Brazil's largest exclusive hub for startup founders — a six-month growth program with mentorship from experienced investors and operators.